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extremely hazardous substances (hazard category (кл. опасности 1 по ГОСТу); extremely hazardous substances (кл. опасности 1 по ГОСТу; hazard category 1) |
вещества чрезвычайно опасные : 4 phrases in 3 subjects |
Military | 1 |
Oil / petroleum | 1 |
Oil and gas | 2 |